Lathe attachment.



W, W. BLAKELY & W. S. MILLER.

LATHE ATTACHMENT.

APPLICATION FILED JAN.16, 1912.

Patented Jan.14,1913.

Z .M Z in. z mm NW mm W M d UNITED STATES PATENT OFFICE.

WILLIAM WARDEN BLAKELY AND WILLIAM S. MILLER, 013 DETROIT, MICHIGAN;SAID MILLER ASIGNOR TO SAID BLAKELY.

LATHE ATTACHMENT.

To all whom it may concern:

Be it known that we, IVILLIAM WVARDEN BLAKELY and lVILLmM S. MILLER,citizens of the United States of American, residing at Detroit, in thecounty of Wayne and State of Michigan, have invented certain new anduseful Improvements in Lathe Attachments, of which the following is aspecification, reference being had therein to the accompanying drawings.

Our invention relates to grinder attachments for lathes, and has amongthe objects thereof to provide an attachment whereby the grinder may beoperated by the driving mechanism of the lathe simultaneously with theworking of the latter, and which may be moved into or out of engagementwith the driving mechanism without affecting the operation of the lathe;to provide a simple and compact structure and one which may be readilyadjusted for engagement with lathes of various sizes; and to so arrangethe mechanism which drives the grinder that the latter will be rotatedin a direction to throw the sparks occasioned during grinding away fromthe operator.

Other objects of our invention will more fully hereinafter appear.

The invention resides in the peculiar construction, arrangement andcombination of parts as hereinafter described and particu larly pointedout in the claims.

In the drawings,Figure 1 is a side elevation, showing a portion of alathe with our improved attachment applied thereto; and Fig. 2 is aperspective view of the grinder attachment, with the cover thereofremoved.

A designates the bed of the lathe, and B the driving cone pulley for thecenter C,

. these parts being of the usual construction.

Our improved attachment is arranged so as to be driven from the conepulley and preferably is secured to the side edge of the bed. As shown,the grinder D and the drive mechanism therefor are arranged within acasing E carried by a suitable support, such as a rod F. This rod has alongitudinal adjustable engagement with a bracket Gr that is secured forrocking movement to a clamp I-I adjustable longitudinally of the bed Aand adapted to be rigidly attached to the edge thereof.

The grinder wheel D is driven through Specification of Letters Patent.

Application filed January 16, 1912.

Patented Jan. 14, 1913.

Serial No. 671,445.

the medium of a Wheel I having a friction tread K for engaging one ofthe pulleys of the driving cone B, and in order that the direction ofrotation of the grinder may be such as to prevent the sparks duringgrinding from being directed toward the operator a reversing gear isinterposed between the wheel and the grinder. Thus, the Wheel I is fixedto a shaft J journaled in a bearing K in a compartment or transmissionbox L formed in the casing E, while the grinder is secured to a secondparallel shaft M also j ournaled in the transmission box and connectedto the shaft J through the medium of intermeshing gears N O. The membersD I are arranged without and upon opposite sides of the transmissionbox, the friction wheel being exterior of the casing E, while thegrinder is positioned in a compartment P formed in the casing at oneside of the transmission box L. Preferably the casing is provided with acover, which as illustrated completely incloses the gears and also themajor portion ofthe wheel D.

Q is a sleeve depending from the bottom of the casing for engaging theupper end of the rod F, and R is a set-screw for clamping the sleeve tothe rod.

The bracket G is preferably in the form of a collar sleeved upon the rodF and provided with spaced ears S, which are positioned upon oppositesides of a lip T on the clamp, and secured to the lip by a bolt U whichpasses through alined apertures in the lip and ears,the bolt serving asa pivot upon which the bracket may be rocked. V is a nut on the bolt,through the medium of which the ears may be clamped to the lip againstrocking movement, and IV is a setscrew on the collar G for retaining therod in its adjusted position.

In applying the attachment to the lathe,

the clamp is secured to the bed adjacent the drive cone and the rodadjusted vertically to properly position the friction Wheel in relationto one of the cone pulleys. When it is desired to use the grinder, thenut V is loosened and the support moved inward until the wheel I engagesthe pulley, and the nut V then tightened. l/Vhen not in use the supportis rocked outward as shown in Fig.1.

It is apparent that both the engagement and disengagement of thefriction wheel with the pulley may be accomplished during 1 and wheel, asupport for said casing secured the rotation of the latter, therebypermitting the grinding operation to be effected simultaneously with andwithout affecting the working of the lathe. This is a very desirablefeature, since if it were necessary to disengage the work from the lathein order to use the grinder the amount of work produced by the lathewould be materially lessened.

What we claim as our invention is,

l. The combination with the bed and the driving pulley of a lathe, of agrinder attachment comprising a casing, a pair of shafts journaled insaid casing, a grinder and a friction wheel fixed respectively to saidshafts, a reversing gear connection between the shafts, a support forsaid casing secured to the bed for vertical and rocking adjustment, saidfriction wheel being adapted on rocking adjustment of the support to bemoved into and out of engagement with the driving pulley.

9.. The combination with the bed and the driving pulley of a lathe, of agrinder attachment comprising a casing, a grinder and a friction wheelcarried by the casing, a reversing gear connection between the grinderto the bed for vertical and rocking adjustment, said friction wheelbeing adapted on the rocking of the support to be moved into and out ofengagement with the driving pulley.

8. The combination with the bed and the driving pulley of a lathe, of agrinder attachment comprising a casing, a grinder and a friction wheelcarried by the casing, a reversing gear connection between the grinderand wheel, a bracket secured to the 6 bed and adapted to be adjustedhorizontally thereof, and a support for said casing connected to abracket for vertical adjustment, and for movement laterally of the bedinward toward and outward from the driving pulley, said friction wheelbeing adapted upon lateral inward and outward movements respectively tobe brought into and out of engagementwith the driving pulley.

In testimony whereof we aiilx our signatures in presence of twowitnesses.

TVTLLIAM WARDEN BLAKELY. WILLIAM S MILLER. Witnesses W. J. BELKNAP,

Janus P. BARRY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. U.

